Safety Precautions - Delta DPM-C320 Operation Manual

D PM -C52 0 /C5 20W /C32 0 Op era tio n M anu al
1.3

Safety Precautions

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Installation Notes
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Operation Notes
Operation Notes
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Wiring Notes
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1 - 4
Install the power meter according to instructions on the manual. Use appropriate
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personal protective equipment (PPE) and follow safe electrical work practices.
Only qualified electrical workers should install this equipment. Such work should be
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performed only after reading the entire set of installation instructions.
Operate the power meter according to instructions on the manual. Neglecting
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fundamental installation requirements may lead to personal injury as well as damage
to electrical equipment or other property.
This equipment should be installed in a suitable insulated and fireproof enclosure.
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DO NOT work alone.
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Before performing visual inspections, tests, or maintenance on this equipment,
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disconnect all electric power sources.
Always use a properly rated voltage sensing device to confirm that power is off.
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Replace all devices, doors and covers before turning on power to this equipment.
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Carefully inspect the work area for tools and objects that may have been left inside
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the equipment.
Never short the secondary of a Power Transformer (PT).
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Never open circuit a Current Transformer (CT)
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Ensure that the CT secondary winding is fixed securely on the equipment. It may
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damage the equipment if the secondary winding becomes loose during operation.
When used with CTs, make sure the CTs are UL2808 listed in America and Canada
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and meet or exceed the accuracy specifications for IEC61869-2 class or accepted by
authority having jurisdiction (AHJ) in other areas.
When the measured current is higher than the rated specification for the device,
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consider using an external current transformer (CT).
When the measured voltage is higher than the rated specification for the device,
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consider using an external potential transformer (PT) (line voltage: 35 to 690V AC L-L
or phase voltage: 20 to 400V AC L-N, 3P4W-690Y400 Vac / 3P3W-600 Vac).
Connect only one cord to one plug on the quick connector.
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For the device is accidently unplugged, check the connecting cord and restart.
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